Madness in the Ruins

It is the winter of 1945, seven months after the Nazi defeat, and Munich is in ruins. Mason Collins-former Chicago police detective, U.S. soldier, and prisoner-of-war-is now Chief Warrant Officer of the American Zone of Occupation. It's his job to enforce the law in a place where chaos reigns. And his job just became much more dangerous.
A killer is stalking the devastated city-one who has knowledge of human anatomy, enacts mysterious rituals with his prey, and seems to pick victims at random. Relying on his wit and instincts, Mason must venture into dangerous places that put his own life at risk: from interrogation rooms with unrepentant Nazi war criminals to the dark tunnels beneath the crumbling city.
But what Mason doesn't know is that the killer he's chasing is stalking him as well...